Lovetide

A village is besieged by prehistoric nymphs when a more horrifying discovery is made. A giant flying creature that resembles a pteranodon emerges. Soon a second monster appears, converging with its mate in Fukuoka.

In Japan, scientifically advanced invaders from the war-destroyed planet Mysteroid cause an entire village to vanish, then send a giant robot out to storm the city by night, after which they request a small patch of land on Earth and the right to marry earthling women, claiming to be pacifists. Mankind must decide whether to capitulate or to resist.

Gaira, a humanoid sea beast spawned from the discarded cells of Frankenstein's monster, attacks the shores of Tokyo. While the Japanese military prepares to take action, Gaira's Gargantua brother, Sanda, descends from the mountains to defend his kin. A battle between good and evil ensues, leaving brothers divided and a city in ruins.

When a space probe crash-lands on a far-flung Pacific atoll, the craft's alien stowaways decide to take over their new world one creature at a time. Soon, the parasitic life forms latch onto three indigenous critters -- a squid, a crab and a snapping turtle -- and transform them into colossal mutant monsters.

In 1965, the space station JSS-3 is attacked by a fleet of UFOs. After the station is destroyed, the saucers make their way to Earth. They then begin a global siege on the planet, using absolute zero rays to manipulate gravity. In response, a global council meeting is held to determine the source of the attacks. There, a representative becomes suddenly stricken with head pain. It is later revealed that he has become mind controlled by the invaders. Revealing themselves to be the Natarl, the aliens declare war on humanity. In response, Earth prepares the SPIP rocket ships. Their plan is to take the war to the aliens, by having a battle in outer space...

An Ishiro Honda film.

An Ishiro Honda film.

An Ishiro Honda film.

In 1980, a giant planetoid named Gorath is discovered to be on a collision course with Earth. Even though it is smaller than Earth, its mass is huge enough to crush the Earth and destroy it. A mission sent to observe Gorath is destroyed after all the orbiting ships are drawn into the planetoid. A later mission is sent to observe and the crew barely leaves before suffering the same fate. However Astronaut Tatsuo Kanai is left in a catatonic state due to his near death experience. The Earth's scientists then come up with a desperate plan to build giant rockets at the South Pole to move Earth out of Gorath's path before it is too late.

The legendary empire of the lost continent of Mu reappears to threaten the world with domination. While countries unite to resist, an isolated World War II Captain has created the greatest warship ever seen, and possibly the surface world's only defense.